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<p>[QUOTE=&quot;Insider, post: 4572610, member: 24314&quot;]&quot;bradgator2, posted: Heat?&nbsp; Almost looks organic.&nbsp; It does look organic and has &quot;flow.&quot;&nbsp; What would heat do to a bubble? </p><p><br /></p><p>expat, posted: &quot;Poorly annealed planchets?&nbsp;&nbsp; We know heat can change the color of both coins and planchets.&nbsp; Annealing requires heat.&nbsp; What would happen to a heat pattern on a planchet when it is struck?&nbsp; How do we explain the pattern on the coin?</p><p><br /></p><p><br /></p><p>Beefer518, posed: &quot;I&#039;m going to go with the obvious -</p><p>It was cleaned with soapy water (or similar), let dry with soap residue still on it, and the toned was affected by the &#039;invisible&#039; residue.&quot;</p><p><br /></p><p>This is possible but I was not around to prove it.&nbsp; This coin has an unnatural color for a BU cent.&nbsp; Additionally, the bubble pattern indicates something dried on the coin.&nbsp; I&#039;m going to guess it was some sort of liquid chemical (perhaps even diluted w/water).&nbsp; Anyway, this coin has a <span style="color: #b30000">CHEMICALLY Altered Surface.</span>&nbsp;&nbsp; </p><p><br /></p><p>Quiz#2 tomorrow.[/QUOTE]</p><p><br /></p>

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